Revert "azure-pipelines: tweak excluded merge branch again"
Revert "azure-pipelines: tweak excluded merge branch again"

This reverts commit 59b88e285c6f93e4b484120b30b09140920cb056.

LinuxbrewTestBot/homebrew-core,maxim-belkin/homebrew-core,Linuxbrew/homebrew-core,LinuxbrewTestBot/homebrew-core,rwhogg/homebrew-core,rwhogg/homebrew-core,maxim-belkin/homebrew-core,Linuxbrew/homebrew-core